I feel like now is the time (this year on the new road map) to implement "Wings" into the game as you did with Dofus. Give some reward to it to keep PVP players happy. Allow lower levels to have wings on as well just give higher level players a penalty for attacking them. If your wings aren't turned on then you can only have friendly duels and higher levels can't attack you.
This will be the best for both worlds for people focusing on the quest and monster based part of the game as well as people who want to branch out and have PVP duels. Also it is in the best interest for Ankama because less frustrated people means they are more likely to return to the game and give you money.
Just an idea to improve the game. Thanks for your time.